SpecStudio
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Grand Seiko SBGN027
$3,700Stock unknown
Case
- Diameter
- 39mm
- Thickness
- 12.3mm
- Lug-to-lug
- 45.9mm
- Lug width
- 19mm
- Material
- Stainless Steel
- Water resistance
- 200m
Crystal & dial
- AR coating
- Yes
Movement
- Caliber
- Grand Seiko 9F86
- Type
- Quartz
Design language
- Case shape
- round
- Dial style
- sunburst
- Bezel
- gmt
- Bracelet
- lug-attached
- Hands
- baton
AI-detected from the product image
2 colorways
The market
Market prices.
Retail$3,700
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Active listings3Across watch forums
Closed · 90d0Asking-price history
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Retail stock & market context
Grand Seiko on the secondhand market
+7.5%
2026 so far · +4.0% to +12.1% · 41 matched watches
In line with the index
GMT watches as a group: +7.6% · 103 matched watches
Year-by-year readings →The connection engine
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The community take
Owners talk.
Grand Seiko SBGN027 owners widely praise its compact 39mm size, Zaratsu polishing, and true GMT complication from its HAQ 9F86 quartz movement, noting its excellent accuracy of +/- 10 seconds per year. The watch is also lauded for its thin profile, grab-and-go suitability, and attractive "jewelry look." However, some users report issues such as limited lume, a GMT hand that can be mistaken for the minute hand, and a bezel index that disappeared on one example after a few months. The bracelet's lack of micro-adjustments is a recurring point of annoyance, and some find the design too plain or dress-casual. Overall, owners rate the Grand Seiko SBGN027 highly for its exceptional finishing and accurate HAQ GMT movement in a versatile, compact package.
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